The 4690-S05 from Modular Devices is a DC to DC Converter with Input Voltage 16 to 50 V, Output Voltage 1 4.9 to 5.1 V, Output Current 1 0.0005 to 0.5 A, Output Power 2500 mW, Isolation Voltage 100 to 500 Vdc. Tags: Through Hole, Module. More details for 4690-S05 can be seen below.